1#ifndef _LINUX_FIRMWARE_H 2#define _LINUX_FIRMWARE_H 3 4#include <linux/module.h> 5#include <linux/types.h> 6#include <linux/compiler.h> 7#include <linux/gfp.h> 8 9#define FW_ACTION_NOHOTPLUG 0 10#define FW_ACTION_HOTPLUG 1 11 12struct firmware { 13 size_t size; 14 const u8 *data; 15 struct page **pages; 16}; 17 18struct device; 19 20struct builtin_fw { 21 char *name; 22 void *data; 23 unsigned long size; 24}; 25 26/* We have to play tricks here much like stringify() to get the 27 __COUNTER__ macro to be expanded as we want it */ 28#define __fw_concat1(x, y) x##y 29#define __fw_concat(x, y) __fw_concat1(x, y) 30 31#define DECLARE_BUILTIN_FIRMWARE(name, blob) \ 32 DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob)) 33 34#define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \ 35 static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \ 36 __used __section(.builtin_fw) = { name, blob, size } 37 38#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE)) 39int request_firmware(const struct firmware **fw, const char *name, 40 struct device *device); 41int request_firmware_nowait( 42 struct module *module, int uevent, 43 const char *name, struct device *device, gfp_t gfp, void *context, 44 void (*cont)(const struct firmware *fw, void *context)); 45 46void release_firmware(const struct firmware *fw); 47#else 48static inline int request_firmware(const struct firmware **fw, 49 const char *name, 50 struct device *device) 51{ 52 return -EINVAL; 53} 54static inline int request_firmware_nowait( 55 struct module *module, int uevent, 56 const char *name, struct device *device, gfp_t gfp, void *context, 57 void (*cont)(const struct firmware *fw, void *context)) 58{ 59 return -EINVAL; 60} 61 62static inline void release_firmware(const struct firmware *fw) 63{ 64} 65#endif 66 67#endif 68